Steam trap



F. L. JAHN Dec. 10, 1929.

STEAM TRAP Filed Feb. 15, 1929 2 Sheets-Sheet l ATTORNEYS Patented Dec. 10, 1929 UNITED STATES PATENT. OFFICE FREDERICK L. JAHN, 0F STONEHURST, PENNSYLVANIA, ASSIGNOR TO WATSON &

MCDANIEL 00., OF PHILADELPHIA, VANIA.

IEENNSYLVANIA, A CORPORATION OF PENNSYL- STEAM TRAP Application filed February 13, 1929. Serial No. 339,516.

My invention relates to a novel construction of a steam trap whereby the water of condensation is automatically removed from the steam system without disturbing the pressure conditions existing within that system, means being provided for preventing the creation of whirl-pools within the trap bucket by the provision of longitudinally extending ribs or bafiies on the side of the pendant outlet tube, thereby preventing steam from flowing out through the center thereof.

It further consists in the provision of novel adjusting means carried by the bottom wall of the bucket for effecting a quick and ready adjustment of the outlet valve, the closing of said valve for stopping the intermittent discharge from the trap being effected quickly and positively.

It further consists in the novel construction and location of a bafile disk having ports therein positioned in the cover of the trap in such a way that a restricted passage is formed and the velocity of the discharged condensate is reduced so thatthe cutting action on the stem and seat of the outlet or discharge valve is also reduced.

It further consists in a novel construction of a discharge or outlet side and top connection carried'by thetrap cover, which can be readily changed to eitherthe right or left hand of the discharge pipe, whereby either the side or top connection can be used for the discharge pipe, if desired, or if said top opening is plugged, the plug can be readily renewed due to the wear caused by the discharged condensate which soon cuts througha thin Wall. 7

By my novel invention the trap is operated by the weight of water in the bucket and is shut off by reason of the flotation or buoyancy of the bucket, when the Water has been discharged. 7 I V 7 By my novel construction, a device of great simplicity is produced, wherein the outlet valve can be tightly closed during the operation of .the trap, the extent of travel of said valve being readily adjusted, novel means being providedfor guiding the outlet valve rod and for permitting inspection and repairs thereof, while the batfles on the outlet tube prevent the formation of whirl-pools.

For the purpose of illustrating my invention I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangementand organization of the instrumentalities as herein shown and described.

Figure 1, represents a plan view of my novel construction of trap, certain parts being removed for clearness of illustration.

Figure 2, represents a vertical section on line 22 Figure 1. v

Figure 3, represents a plan view of the baffie disk employed.

Figure 4, representson an enlarged scale a vertical section of the adjustable member in the bottom of the bucket whereby the ex tent of travel of the outlet valve is regulated.

Figure 5, represents a front elevation in detached position of the bracket whereby the bucket is pivotally supported.

Figure 6, represents a section on line 66 Figure 2. Y t

Figure 7 represents a perspective view of the underside of the trap cover showing the elongated pendant outlet tube and the longitudinally extending baffles or ribs thereon whereby whirl-pools are prevented. Figure 8 is a perspective view of a modified bucket.

Similar numerals of reference indicate corresponding parts. 7

1 designates my novel construction of trap, the same comprising a body portion 2, having the bucket chamber 3, therein, at the lower portion of which is the threaded drain outlet 4:, which is provided with a plug or closure 5 upon the removal of which dirt or sediment can be blown out or the trap drained if exposed to freezing temperatures. 6 designates the inlet to'the trap' and 7 the cover therefor which is provided with the pendant discharge tube 8 preferably integral therewith, which is Op n at ifiS bQttQm- 11 9 n provided with the longitudinally extending oppositely disposed vertical ribs or baffles 10, which are preferably integral with the tube 8, and perform an important function u the bucket 11, since they serve to prevent whirl-pools from forming and allowing steam to flow through the center of the tube 8. The bucket 11 is pivotally supported in the chamber 3, by means, of the adjusting screws 12, threaded into the arms 13 0f the. pendant bracket ll, having the top flange 15, which is bolted to the bottom of the cover The conical ends 16 of the screws 12 engage conical seats 17 in the lug 18 at the bottom of the bucket 11 (see Fig. The bottom 19 of the bucket is provided with, the tapped hole 20, (see Figs. land 6) through which asses the threaded stem 21, which is integra with the upper body 22 having the cup shaped seat 23 therein and a bottom shoulder which rests on thebottom wall 19. 24: designates a slot in the bottom'of the stem 21, for the applioa tion of a screw driver, to adjust the stem 21 vertically, the latter being locked in adjusted position by the lock nut 25; 2 6 designates a bafiledisk having a central guide port'27 in which the valve rod 28 is guided, said disk also having the ports 29therein,'which reduce the velocity of the discharged condensate and reduce the cutting action of the fluid on the stem and seat of the outlet, valve. will be seen from Figure 2 the baflle 26, is located in the threaded opening 30in the cover 7 in proximity to the lower-edge of the threaded portion 31 of the valve casing32, so that only a restricted passage is provided between the battle disk 26,and the bottom end of the threaded portion 31 for the exit of.

the fluid. The lower end of the valve" rod QS'is'pivotally secured M33 in the seat 23, and carries at its upper end tlie'valve 34, which controls the outlet port 35, which dis charges into the chamber 36 within the housing'37 which is provided'with'top and side .hreaded openings 38 and 39 of the same size either of which may be closed by the plug 40 seen in Figure 2. Either discharge opening 38 or 39' can be employed, so thatthe' outlet side connection can bechanged'to either right .21 left hand for the discharge pipe, or if the peni 38 i Pl g ed pl s canbe ea i v renewed if necessary due to the wear caused by the discharged condensate which soon cuts through athin wall. The valve seat. member containing the outlet port 35jcan be ead ly remove an replaced as is eviden -I Th ing 37. w e ea ily t rne a ound so a he ex t 3 ca pe nt in eit e direcien. r

h perat en asf0 lQWs;-

. Whensufi cient Water ha accumulated n h hambe 'to flow o e h epof he basket 1. thelatt r will t l at? e pive el points 12,, admi ting Wa er r pidly, th reby unseating the valve 34;; The steam pressure in the upper part of the chamber 3 pressing on the top of the water forces the water within the bucket upwardly through the pipe 8, through the restricted ports 29 of the baffle disk 26. (See Figs. 2 and 3). By locating the baille disk in the threaded opening 30 of the cover 7 as seen in Figures 2 and 3 in proximity to the bottom of the threaded portion 31, a restricted passage is formed for the flu d when past the val e nd port 35 to the exit 38 or 39. This outward flow of waterwill continue until the bucket 11 has been relieved of sufficient weight of water to enable it to rise into the position seen in Figure 2, whereupon the valve 32 will be seated. The vertical ribs or baffles 10 on the side of the outlet tube 8 prevent a whirlpool froin'forming and allowing steam to blowthrough'the center. Any wear of the valve 34 orits seat can be readily adjusted by adjusting the stem 21 (see Figs. 2 and 4t).

'Ifdesi'red I may employ the construction of bucket seen in Figure 8, wherein the battles 41 are attached to or integral with the bucket walls, said bafiies being oppositely disposed at each side of the opening 20,-and the-discharge tube 8.

The baflles 41 serve the same function as the baffles 10 already referred to, which latter may be dispensed with when the baffles 411 are employed. Y

I am aware that the invention may be embodied in other specific forms without clepartin -from the spirit oressential attributes thereo and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference beind had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1.; In a' steam trap, a cover therefor having a pendant outlet tube, longitudinally extending bafiiesjon said tube, a bucket pivotallysupported in said trap, a valve for controlling' the exit ofwater from said trap, a cup positioned in the lower endof said tube, a valve rod for said valve having its lower end pivoted in said cup, a threaded stem depending from said cup and in threaded engagement withthe bottom ofsaid bucket, a nut for s id; stem arrang e er y to said bucket a, housing forsaid valve provided with top and side exit openings;

, 2. In a steam trap, 21. body portion, having a bucket chambe h r n, a bucket pi ta y ecant d 'i sa d c mber, a v r. f th a te hav ng- 3 th eaded opening theremeans for controlling the flow of Water from said bucket, and a housing secured to said cover and having top and side threaded exit openings of the same size,

3. In a steam trap, a body portion, having a bucket chamber therein, a bucket pivotally mounted in said chamber, a cover for the latter having a threaded opening therethrough, a bafiie disk having ports therethrough, and secured in said threaded opening, a pendant outlet tube attached to said cover, longitudinally extending oppositely disposed baflies carried by said outlet tube, a valve for controlling the flow of Water from said tube, a cup having a threaded stem engaging the bottom Wall of said bucket, a rod for said valve having its lower end pivoted in said cup, and a housing for said valve secured to said cover and having top and side threaded openings of the same size, one of said openings being plugged when the other is in use.

FREDERICK L. JAHN. 

